:root{
  --ink:#19191C;      /* brand black, from the logo */
  --paper:#FFFFFF;
  --steel:#EDEFF2;    /* cool light grey, like brushed aluminium */
  --rule:#C9CED6;
  --muted:#5E6673;
  --orange:#F27824;   /* brand accent, the dot on the i */
  --ok:#1F7A4D;
  --font:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
img{max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.pn{font-family:var(--mono);font-weight:500;font-size:.92em;letter-spacing:.01em}

/* ---------- header ---------- */
header.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.top .wrap{display:flex;align-items:center;gap:20px;height:64px}
.wordmark{display:inline-flex;align-items:flex-end;text-decoration:none;font-weight:800;font-stretch:112%;font-size:30px;line-height:1;letter-spacing:-.01em;color:var(--ink)}
.wordmark .i{position:relative;display:inline-block;width:.17em;height:.52em;background:currentColor;margin-left:.05em;margin-bottom:.1em}
.wordmark .i::before{content:"";position:absolute;left:50%;top:-.36em;width:.27em;height:.27em;border-radius:50%;background:var(--orange);transform:translateX(-50%)}
.top nav{margin-left:auto;display:flex;align-items:center;gap:22px;font-size:15px}
.top nav a.link{text-decoration:none;color:var(--muted)}
.top nav a.link:hover{color:var(--ink)}
.lang{display:flex;border:1px solid var(--rule);border-radius:6px;overflow:hidden}
.lang button{font:inherit;font-size:13px;font-weight:600;background:none;border:0;padding:6px 9px;cursor:pointer;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--ink);color:#fff}
.btn{display:inline-block;font:inherit;font-weight:700;font-size:16px;background:var(--ink);color:#fff;border:0;border-radius:6px;padding:12px 18px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{background:#000}
.btn.small{font-size:14px;padding:9px 14px}
@media (max-width:820px){.top nav a.link{display:none}}
@media (max-width:420px){.top .btn.small{display:none}}

/* ---------- hero ---------- */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--rule)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{font-weight:800;font-stretch:118%;font-size:clamp(36px,5.2vw,62px);line-height:1.02;letter-spacing:-.02em;margin:0 0 22px;max-width:14ch}
.hero p.lead{font-size:19px;color:#2F343B;max-width:34em;margin:0 0 14px}
.hero p.note{font-size:15px;color:var(--muted);margin:0}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr;gap:40px}.hero{padding:48px 0}}

/* The nameplate: the quote form styled as a motor rating plate */
.plate{position:relative;background:linear-gradient(180deg,#F6F7F9,#E9ECF0);border:2px solid var(--ink);border-radius:10px;padding:26px 26px 22px;
  background-image:
    radial-gradient(circle at 14px 14px,#9BA3AE 3.5px,transparent 4.5px),
    radial-gradient(circle at calc(100% - 14px) 14px,#9BA3AE 3.5px,transparent 4.5px),
    radial-gradient(circle at 14px calc(100% - 14px),#9BA3AE 3.5px,transparent 4.5px),
    radial-gradient(circle at calc(100% - 14px) calc(100% - 14px),#9BA3AE 3.5px,transparent 4.5px),
    linear-gradient(180deg,#F6F7F9,#E9ECF0)}
.plate .head{display:flex;align-items:baseline;justify-content:space-between;border-bottom:2px solid var(--ink);padding:0 8px 10px;margin-bottom:6px}
.plate .head strong{font-weight:800;font-stretch:112%;font-size:20px}
.plate .head span{font-size:13px;color:var(--muted)}
.plate .row{display:grid;grid-template-columns:9.5em 1fr;align-items:center;gap:12px;border-bottom:1px solid #B8BEC7;padding:10px 8px}
.plate label{font-size:13px;font-weight:600;color:#3A4049}
.plate input{width:100%;font:inherit;font-size:18px;background:transparent;border:0;border-bottom:1.5px solid transparent;padding:4px 2px;color:var(--ink)}
.plate input:focus{outline:none;border-bottom-color:var(--orange)}
.plate input.pn{font-size:19px;text-transform:uppercase}
.plate .go{display:flex;gap:12px;align-items:center;padding:16px 8px 2px}
.plate .go small{color:var(--muted);font-size:13px}
.plate .status{padding:8px 8px 0;margin:0;font-size:14px;min-height:0}
.plate .status.ok{color:var(--ok);font-weight:600}
.plate .status.err{color:#B3261E;font-weight:600}
.plate-more{margin:6px 8px 0;font-size:14px}
.plate-more a{color:var(--muted)}
@media (max-width:520px){.plate .row{grid-template-columns:1fr;gap:2px}.plate{padding:22px 16px 18px}}

/* ---------- brands ---------- */
.brands{padding:26px 0;border-bottom:1px solid var(--rule)}
.brands .wrap{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 28px}
.brands h2{font-size:14px;font-weight:600;color:var(--muted);margin:0 8px 0 0}
.brands ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 26px}
.brands li{font-weight:700;font-stretch:108%;font-size:17px;color:#3A4049}

/* ---------- sections ---------- */
section.block{padding:80px 0;border-bottom:1px solid var(--rule)}
section.block h2{font-weight:800;font-stretch:112%;font-size:clamp(28px,3.4vw,40px);letter-spacing:-.015em;line-height:1.1;margin:0 0 36px;max-width:22ch}
.alt{background:var(--steel)}

/* steps: a real sequence, so numbers are earned */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--ink)}
.steps li{padding:22px 22px 6px 0;position:relative}
.steps li + li{padding-left:22px;border-left:1px solid var(--rule)}
.steps .n{display:block;font-weight:800;font-stretch:120%;font-size:44px;line-height:1;color:var(--orange);margin-bottom:14px}
.steps h3{font-size:19px;margin:0 0 8px;font-weight:700}
.steps p{margin:0;color:#3A4049;font-size:16px}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr}.steps li:nth-child(3){padding-left:0;border-left:0}.steps li:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}.steps li,.steps li + li{padding-left:0;border-left:0;border-top:1px solid var(--rule)}.steps li:first-child{border-top:0}}

/* categories */
.cats{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;column-gap:48px;border-top:2px solid var(--ink)}
.cats li{font-weight:700;font-size:19px;padding:16px 0;border-bottom:1px solid #C3C9D1}
.parts-note{margin:24px 0 0;font-size:17px;max-width:40em}
@media (max-width:640px){.cats{grid-template-columns:1fr}}

/* why */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.why h3{font-size:20px;margin:0 0 10px;padding-top:14px;border-top:3px solid var(--ink)}
.why p{margin:0;color:#3A4049}
@media (max-width:820px){.why{grid-template-columns:1fr;gap:28px}}

/* quote form */
.quote .wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px}
.quote p.sub{color:#3A4049;max-width:28em;margin:-18px 0 20px}
.quote .alt-mail{font-size:15px;color:var(--muted)}
form.full{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
form.full .wide{grid-column:1/-1}
form.full label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:#2F343B}
form.full input,form.full select,form.full textarea{width:100%;font:inherit;font-size:16px;border:1.5px solid #AEB5BF;border-radius:6px;padding:11px 12px;background:#fff;color:var(--ink)}
form.full textarea{min-height:120px;resize:vertical}
form.full textarea#parts{font-family:var(--mono);font-size:15px}
form.full input:focus,form.full select:focus,form.full textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(242,120,36,.35)}
form.full label.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;font-weight:400;margin:0}
form.full .check input{width:18px;height:18px;margin-top:3px;flex:none;accent-color:var(--ink)}
.status{grid-column:1/-1;font-size:15px;margin:0;min-height:1.4em}
.status.ok{color:var(--ok);font-weight:600}
.status.err{color:#B3261E;font-weight:600}
@media (max-width:860px){.quote .wrap{grid-template-columns:1fr;gap:24px}form.full{grid-template-columns:1fr}}

/* faq */
.faq details{border-top:1px solid #C3C9D1;padding:18px 0}
.faq details:last-child{border-bottom:1px solid #C3C9D1}
.faq summary{cursor:pointer;font-weight:700;font-size:19px;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:26px;line-height:1;color:var(--muted)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:12px 0 0;max-width:42em;color:#3A4049}

/* contact */
.ct{margin:0;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:24px;border-top:2px solid var(--ink);padding-top:20px}
.ct dt{font-size:14px;font-weight:600;color:var(--muted);margin-bottom:6px}
.ct dd{margin:0;font-size:18px;font-weight:600;overflow-wrap:anywhere}
@media (max-width:860px){.ct{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.ct{grid-template-columns:1fr}}

/* footer */
footer{padding:48px 0 56px;font-size:14px;color:var(--muted)}
footer .wrap{display:grid;grid-template-columns:auto 1fr;gap:16px 48px}
footer .wordmark{font-size:24px;align-self:start}
footer p{margin:0 0 8px;max-width:60em}
#privacy h3{color:var(--ink);font-size:15px;margin:18px 0 6px}
@media (max-width:700px){footer .wrap{grid-template-columns:1fr}}

/* japanese text inside blog posts */
:lang(ja){font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",system-ui,sans-serif}

/* active nav link */
.top nav a.link[aria-current="page"]{color:var(--ink);font-weight:600}

/* ---------- blog list ---------- */
.page-head{padding:64px 0 40px;border-bottom:1px solid var(--rule)}
.page-head h1{font-weight:800;font-stretch:118%;font-size:clamp(34px,4.6vw,54px);line-height:1.04;letter-spacing:-.02em;margin:0 0 14px;max-width:18ch}
.page-head p{font-size:19px;color:#2F343B;margin:0;max-width:36em}
.posts{list-style:none;margin:0;padding:0}
.posts li{border-bottom:1px solid var(--rule)}
.posts a{display:grid;grid-template-columns:9em 1fr;gap:24px;padding:28px 0;text-decoration:none}
.posts time{color:var(--muted);font-size:15px;padding-top:4px}
.posts h2{font-size:24px;line-height:1.25;margin:0 0 6px;font-weight:700}
.posts a:hover h2{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;text-decoration-color:var(--orange)}
.posts p{margin:0;color:#3A4049;max-width:40em}
.posts .lng{display:inline-block;font-size:12px;font-weight:600;color:var(--muted);border:1px solid var(--rule);border-radius:4px;padding:1px 6px;margin-left:8px;vertical-align:middle}
.empty{padding:40px 0;color:var(--muted)}
@media (max-width:640px){.posts a{grid-template-columns:1fr;gap:6px}}

/* ---------- blog post ---------- */
.post{padding:56px 0 80px}
.post .inner{max-width:44rem}
.post .back{display:inline-block;font-size:15px;color:var(--muted);margin-bottom:28px}
.post h1{font-weight:800;font-stretch:112%;font-size:clamp(30px,4vw,44px);line-height:1.1;letter-spacing:-.015em;margin:0 0 12px}
.post .meta{color:var(--muted);font-size:15px;margin:0 0 36px;padding-bottom:24px;border-bottom:2px solid var(--ink)}
.prose{font-size:18px;line-height:1.7}
.prose h2{font-size:26px;line-height:1.25;margin:44px 0 12px}
.prose h3{font-size:21px;margin:32px 0 8px}
.prose p,.prose ul,.prose ol{margin:0 0 20px}
.prose li{margin-bottom:6px}
.prose a{text-decoration-color:var(--orange);text-decoration-thickness:2px;text-underline-offset:3px}
.prose blockquote{margin:24px 0;padding:4px 0 4px 20px;border-left:3px solid var(--orange);color:#3A4049}
.prose img{display:block;border-radius:6px;margin:28px 0}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--steel);padding:1px 5px;border-radius:4px}
.prose hr{border:0;border-top:1px solid var(--rule);margin:40px 0}
.post .cta{margin-top:48px;padding-top:24px;border-top:1px solid var(--rule);color:#3A4049}